CVE-2026-80186

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-26. A secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-66133 (ENISA EUVD) · GHSA-f784-6479-v89p (GitHub Security Advisories)Source: ENISA EUVD

7.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity76% × 45%
Impact severity (EG Severity): CVSS 7.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.6): severity, escalated by confirmed exploitation. This CVE's 7.6 is its impact severity (EG Severity), not escalated.

EG Severity
7.6 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 25, 2026

Last Modified

November 5, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
Patch available. Sources: redhat, github.
GitHub advisoryMentions a patch (unverified)

Stack Overflow in name2utf8 causes DoS and potential code execution · Advisory · bluez/bluez · GitHub

https://github.com/bluez/bluez/security/advisories/GHSA-68h6-5qgp-3975
Red Hat

2524132 – (CVE-2026-80186) CVE-2026-80186 bluez: Stack Overflow in name2utf8 causes DoS and potential code execution

https://bugzilla.redhat.com/show_bug.cgi?id=2524132
Red HatMentions a patch (unverified)

CVE-2026-80186 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-80186

Vendor Advisories for CVE-2026-80186(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibbluetooth3 (5.37-0ubuntu5.3+esm6) @ xenial2026-11-12ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
bluez5.66-1 ... 5.87-5 (29 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
bluez5.82-1.1 ... 5.87-5 (13 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
bluez5.82-1.1 ... 5.87-2 (10 versions)
  • every version up to 5.87-3: fixed in 5.87-3
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 42× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 242 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 142 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:57 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-11-12 16:47 UTCEchelonGraph re-scored
  3. 2026-11-12 16:47 UTCVendor advisory
  4. 2026-11-12 16:47 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  5. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  7. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  9. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-11-05 00:27 UTCEchelonGraph re-scored
  14. 2026-11-05 00:27 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  15. 2026-11-04 23:50 UTCEchelonGraph re-scored
  16. 2026-11-04 23:50 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  17. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  18. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-11-02 17:33 UTCEchelonGraph re-scored
  20. 2026-11-02 17:33 UTCVendor advisory
  21. 2026-11-02 17:33 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  22. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-10-31 19:58 UTCEchelonGraph re-scored
  25. 2026-10-31 19:58 UTCVendor advisory
Show 75 more
  1. 2026-10-31 19:58 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  9. 2026-10-25 13:59 UTCEchelonGraph re-scored
  10. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-24 03:59 UTCEchelonGraph re-scored
  12. 2026-10-24 03:59 UTCVendor advisory
  13. 2026-10-24 03:59 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  14. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-18 03:10 UTCEchelonGraph re-scored
  21. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-10-16 11:58 UTCEchelonGraph re-scored
  24. 2026-10-16 11:58 UTCVendor advisory
  25. 2026-10-16 11:58 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  26. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  27. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  28. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  29. 2026-10-13 06:32 UTCEchelonGraph re-scored
  30. 2026-10-13 06:32 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  31. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-10-12 14:57 UTCEchelonGraph re-scored
  33. 2026-10-11 19:21 UTCEchelonGraph re-scored
  34. 2026-10-11 16:37 UTCEchelonGraph re-scored
  35. 2026-10-11 13:56 UTCEchelonGraph re-scored
  36. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  37. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  38. 2026-10-10 11:09 UTCEchelonGraph re-scored
  39. 2026-10-10 11:09 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  40. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  41. 2026-10-09 03:41 UTCEchelonGraph re-scored
  42. 2026-10-09 03:41 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  43. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  44. 2026-10-08 02:17 UTCEchelonGraph re-scored
  45. 2026-10-08 02:17 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  46. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  47. 2026-10-07 06:41 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  48. 2026-10-06 19:16 UTCEchelonGraph re-scored
  49. 2026-10-06 19:16 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  50. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  51. 2026-10-06 07:38 UTCEchelonGraph re-scored
  52. 2026-10-06 07:38 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  53. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  54. 2026-10-05 16:58 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  55. 2026-10-05 03:57 UTCEchelonGraph re-scored
  56. 2026-10-05 03:57 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  57. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  58. 2026-10-04 16:29 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  59. 2026-10-04 05:04 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  60. 2026-10-03 17:40 UTCEchelonGraph re-scored
  61. 2026-10-03 17:40 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  62. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  63. 2026-10-03 06:17 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  64. 2026-10-02 18:53 UTCEchelonGraph re-scored
  65. 2026-10-02 18:53 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  66. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  67. 2026-10-02 07:22 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  68. 2026-10-01 19:59 UTCEchelonGraph re-scored
  69. 2026-10-01 19:59 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  70. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  71. 2026-10-01 07:32 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  72. 2026-09-30 20:09 UTCEchelonGraph re-scored
  73. 2026-09-30 20:09 UTCGHSA enrichmentGHSA-f784-6479-v89p · GitHub severity HIGH · GitHub CVSS 7.6
  74. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  75. 2026-09-30 06:21 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-80186?
CVE-2026-80186 is a high-severity vulnerability; its CVE record was published on August 25, 2026. A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This…
When was CVE-2026-80186 made public?
CVE-2026-80186 was made public on August 25, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on August 25, 2026. EchelonGraph's copy of the record carries a last-modified date of November 5, 2026; the record at its source may have been updated since.
Is CVE-2026-80186 actively exploited?
CVE-2026-80186 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-80186?
CVE-2026-80186 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-80186?
A fix for CVE-2026-80186 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-80186 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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